Fix unescaped tags on api doc template

src/Packagist/WebBundle/Resources/views/ApiDoc/index.html.twig

@@ -3,7 +3,7 @@
 
 <h2 class="title">API documentation</h2>
 <p>Packagist has a public API to consume data. See bellow the most important 
-URIs: </>
+URIs: <br/>
 
 <ul>
 <li><a href="#list-packages-by-organization">List packages by organization</a></li>
@@ -67,7 +67,7 @@ GET https://packagist.org/search.json?q=[query]
     ...
   ],
   "total": [number of results],
-  "next": "https://packagist.org/search.json?q=[query]&page=[next page number]"
+  "next": "https://packagist.org/search.json?q=[query]&amp;page=[next page number]"
 }
 </code>
 </section>